Half to geoege h



8 (No Model.) 2 Sheets-Sheet 1.

A, C; SHAW.`

TELLURIAN.

No. 288,872. Patented Nov. 18, 1888.

2 Sheets-Sheet 2.

(Np Model.)

Nbqzaaf/ZQ j portion isthus simply made andeasily kept f tion to receive this nut.

,UNiTnn STATES i PATENT @Erica s l ALBERT sHAW, or sAN` FRANCISCO, CALIFORNIA, AssIGNoR or CNE- HALF TOGEORGE H. FULLER, OF SAME PLAGE.

TELLURIAN.

SPECIFLIGATIGN-formingpart of Letters Patent No. 288,372, dated ANCI/einher 13, 1883.

1b all whom, it may concern:

Be it known that I, ALBERT C. SHAW, of the city and countyof San lran'cisco,` State of California, have inventedV an Improved Tellurian; and I hereby declare the following to s 2 is a section.` Figs. 3 and 4 are details of 15 construction.

A is a standard fixed in a base, B, and having the sun-gl obe Gsupp orted `up on the top, as will v be morefullyexplained. This standard is turned in three sizes, diminishing toward the top, and having shoulders formed, as shown. Upon the shoulder formed at the junction of the'lower section with the second one is xed a pulley, D, which is fixed to the standard. i

The arm E, which extends out to support the earth and carry it in its orbit around the sun, is made with a hub or` sleeve, F, `which is bored out to nt over the second portion of l ley upon the standard supporting the earth. l. 35

Above the hub or sleeveh` of this arm is the large wheel H, which is bored to t the upper and smaller portion of the standard A, rest ing upon the upper shoulder, where it is iirrnly xed by a nut, Lwhich is screwed down upon it, a thread being formed-upon the uppersec- The upper part of the nut may have a smaller threaded hole .made init to receive the stem J. This stem be slipped down upon it, and the whole of this in order. The arm E has a slot, K, made in j the top of its o uterf` end, as shown, with` an enlarged hole at one end of the slot, through which `to introduce or remove the slide L, which is looseon shaft O. This slide may be y Appiieaon filed Jun@ 23,1882. (no model.)

made cylindrical, as shown, and has a groove turned in it, `so that it will just fit in the slot K.- A screw, M, projects out through the end of the arm E, and a nut, N, upon its outer end, will, when turned, move theslide L out or in, and thus tighten or relax the driving cords or belts. j A `spindle or` stem, O, extends up through the slide L, within which it turns. Upon the lower end of this spindle is fixed a pulley,-P, around which the driving-Cord Q passes from the pulley D ofthe standard A. These. pulleys are of the same size; and the `object of this portion of the mechanism isto retain the earth-globe R in the saine relative positionduring the revolution around the sun, and thus retain its polarity. The earth-globe is. supported upon a stem, S, which is iixed at f circles,'being equidistant from the center of l motion.

` Two Acylindrical pieces, UU, are fiixed to `the spindle O just below the arm T, having their ends cut at an` angle, as shown, and a cam-` pulley, V, `turns loosely upon the spindle between the two inclined faces. This pulley is driven by a cord from the large' wheel H, the proportion of the wheel to the pulley being such as to give the moon the proper number of revolutions around the earth while the latter passes around the sun. The pulleyV has an arm,W, projecting from one side, carrying the moon-globeXuponit, and the angle which the axis ofthe pulley V makes with the spindle O determines the plane in which the moon revolves about the earth.

.A curved arm, Y, projects from the end of the Yarm E, extending up over the earth-globe,

`and a ring, Z, oi'.wire,is iixed to this arm, en- `circling the earth-globe at a little distance from it and in the plane whichrepresents the ICO marked around its periphery, and an index-arm or marker, a, `may extend i'romthe inner end of the arm E, to indicate the signs through which the earth may be passing.

It will be manifest that bevel-pinions may be substituted for the pulleys D and l?, and a shaft having corresponding bevel-pinionsmay eXtend beneath the arm E,in place of the cord Q, to produce the desired action upon the earth-globe.

In order to produce the actual effect of day and night upon the earths surface as it revolves, to show the phases of the moon, and Vproduce the effect of an eclipse, I form the sun-globe of two hollow sections, which may be opened or separated to admit a light. The half which is toward the earth has its interior blackened, and ashort adjustable tube, b, is fitted into an opening in this part, so as to direct the light upon the earth. The rear half of the sun-globe, or that which is away from the earth, has its interior polished, so that it Will reiiect and concentrate the rays of the light f, which is placed within the globe upon a plano-convex lens, c, and from thence the rays pass through a lens, d, in the tube B, so

as to strike upon the earth.

An arm, e, of elastic materialas spring brass orsteel-is fixed to the arm E, and eX- tends up over the wheel H, and a point or projection in its end is made to enter the sunglobe, so as to cause it to rotate upon its axis simultaneously With the motion of the earth, and thus always keep the light upon the latter. 3 5 The rays of light thus falling upon the earth ese-,372

and moon will produce `the'efect of night and day, solar and lunar eclipses, and will always show the phases of the moon.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, isl 1.` In a tellurian, the karm E, turning upon the central shaft, and carrying the earth-globe at the outer end, and having the slot K, as shown, in combination with the slide L, mov-V ing in said slot, .the screw M, and the nut N, substantially `as herein described.

2. The earth-globe R, supported and rotated upon the spindle O, as shown, in combination with the moon-globe X, stem W, and the pulley V, turning in a plane which cuts the plane of the earths orbit at an angle, substantially as herein described.

8. The earth-globe R, supported and rotated upon the spindle O, and the moon-globe X, with its arnrW, and driving-pulley, in conibination with the curved arin Y and the day- Witnesses:

L. II. Nounsn, G. W. EMERsoN. 

